| Episode Title | Missing Word | Season |
| The Man ___ | |
| Charlie ___ | |
| Where No Man Has Gone ___ | |
| The Naked ___ | |
| The ___ Within | |
| Mudd's ___ | |
| What Are Little ___ Made of? | |
| ___ of the Mind | |
| The Corbomite ___ | |
| The ___ of the King | |
| Balance of ___ | |
| Shore ___ | |
| The Galileo ___ | |
| The ___ of Gothos | |
| ___ is Yesterday | |
| ___ Martial | |
| The Return of the ___ | |
| ___ Seed | |
| A ___ of Armageddon | |
| This ___ of Paradise | |
| The ___ in the Dark | |
| ___ of Mercy | |
| The Alternative ___ | |
| | Episode Title | Missing Word | Season |
| The City on the Edge of ___ | |
| ___ - Annihilate! | |
| ___ Time | |
| Who ___ for Adonais? | |
| Mirror, ___ | |
| The ___ Machine | |
| I, ___ | |
| ___ to Babel | |
| Friday's ___ | |
| The Deadly ___ | |
| ___ in the Fold | |
| The Trouble with ___ | |
| The ___ of Triskelion | |
| A ___ of the Action | |
| The Immunity ___ | |
| A ___ Little War | |
| ___ To Tomorrow | |
| Patterns of ___ | |
| By Any Other ___ | |
| The Omega ___ | |
| The Ultimate ___ | |
| ___ and Circuses | |
| Assignment: ___ | |
| | Episode Title | Missing Word | Season |
| Spock's ___ | |
| The ___ Incident | |
| The ___ Syndrome | |
| And the ___ Shall Lead | |
| Is There in ___ No Beauty? | |
| Spectre of the ___ | |
| Day of the ___ | |
| For the World is ___ and I Have Touched the Sky | |
| The Tholian ___ | |
| Plato's ___ | |
| ___ of an Eye | |
| Elaan of ___ | |
| Whom ___ Destroy | |
| Let That Be Your Last ___ | |
| The ___ Of Gideon | |
| That Which ___ | |
| The ___ of Zetar | |
| ___ for Methuselah | |
| The Way to ___ | |
| The ___ Minders | |
| The Savage ___ | |
| All Our ___ | |
| Turnabout ___ | |
| No, you already did that one | |
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